US lawArizonaRegulationsTitle 18 — Environmental QualityChapter 9 — Department of Environmental Quality - Water Pollution ControlR18-9-720R18-9-720R18-9-720. RepealedRepealedLast amended: 2018Length: 2 wordsOfficial source Cite as Ariz. Admin. Code § R18-9-720R18-9-720. RepealedPreviousR18-9-719NextR18-9-801